2019 Asian Athletics Championships – Men's 400 metres
| Men's 400 metres at the 2019 Asian Athletics Championships | ||||||||||
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| Venue | Khalifa International Stadium | |||||||||
| Location | Doha, Qatar | |||||||||
| Dates | 21 April (heats & semi-finals) 22 April (final) | |||||||||
| Competitors | 27 from 22 nations | |||||||||
| Winning time | 44.84 NR | |||||||||
| Medalists | ||||||||||
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The men's 400 metres at the 2019 Asian Athletics Championships was held on 21 and 22 April.